Answer:
(4x+5) (16x^2- 20x +25)
Explanation:
Since both terms are perfect cubes, factor using the sum of cubes formula.
Cubes Formula:
a^3+b^3=(a+b)(a^2−ab+b^2)
where a=4x and b=5.
hence, why the answer is (4x+5) (16x^2- 20x +25)
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